The number 274
274 is a composite number with 4 divisors. Its prime factorisation is 2 × 137. Divisors (4): 1, 2, 137, 274.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 274: a semiprime: 2 × 137, the product of two primes.
- 2
274 is composite. Its prime factorisation is
- 3
The divisors add up to 414; without 274 itself that is 140, so 274 is deficient (140 is less than 274). Euler's totient φ(274) = 136 numbers up to 274 share no factor with it.
- 4
The digits of 274 add up to 13, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 91 steps to reach 1.
LaTeX source of the formulas on this page
\[ 274 = 2 \times 137 \]
274 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 414 |
| Euler totient φ(n) | 136 |
| Square | 75076 |
| Cube | 20570824 |
| Square root | 16.552945 |
| Digit sum / digital root | 13 / 4 |
| Collatz steps to 1 | 91 |
| Scientific notation | 2.74 × |
274 in other forms
| Form | Value |
|---|---|
| In words | two hundred and seventy-four |
| Roman numerals | CCLXXIV |
| Binary (base 2) | 100010010 |
| Octal (base 8) | 422 |
| Hexadecimal (base 16) | 112 |
| Base 3 | 101011 |
| As time | 274 seconds = 4 min 34 s |
Is 274 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (274 ÷ 2 = 137) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 1) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 4) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 4) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 1) | A number is divisible by 7 if double the last digit and subtract it from the rest: the result is a multiple of 7. |
| 8 | No (remainder 2) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 4) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 4) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 10) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 274 a prime number?
No. 274 = 2 × 137, so it is divisible by 2.
What are the factors of 274?
1, 2, 137, 274.
What is 274 in binary?
100010010 (hexadecimal 112, octal 422).
What is the square root of 274?
About 16.5529.
What is 274 in Roman numerals?
CCLXXIV.
Is 274 divisible by 3?
No. Its digits add up to 13, which is not a multiple of 3.
What is special about the number 274?
274 is a semiprime: 2 × 137, the product of two primes.